Abstract
A study of the kinetic behaviour of calcium oxalate dehydration using TG data is reported. The discrimination among non-separable variables models was carried out in a differential form. It was found that a two step model namely nucleation, E 1 = 168 kJ mol −1, and reaction at the cylinder interface, E 2 = 70 kJ mol −1 is required to descibe the reaction course. Good agreement between experimental and calculated α- T curves is observed.
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